US4927358A - Apparatus for producing honeycomb panels - Google Patents

Apparatus for producing honeycomb panels Download PDF

Info

Publication number
US4927358A
US4927358A US07/343,642 US34364289A US4927358A US 4927358 A US4927358 A US 4927358A US 34364289 A US34364289 A US 34364289A US 4927358 A US4927358 A US 4927358A
Authority
US
United States
Prior art keywords
drawout
trays
heating chamber
honeycomb panels
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/343,642
Other languages
English (en)
Inventor
Mitsunobu Tamura
Toshifumi Tsuchihashi
Toshihisa Kenmochi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Yokohama Rubber Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd, Yokohama Rubber Co Ltd filed Critical Honda Motor Co Ltd
Assigned to HONDA GIKEN KOGYO KABUSHIKI KAISHA, YOKOHAMA RUBBER CO., LTD., THE reassignment HONDA GIKEN KOGYO KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KENMOCHI, TOSHIHISA, TAMURA, MITSUNOBU, TSUCHIHASHI, TOSHIFUMI
Application granted granted Critical
Publication of US4927358A publication Critical patent/US4927358A/en
Assigned to HONDA GIKEN KOGYO KABUSHIKI KAISHA reassignment HONDA GIKEN KOGYO KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YOKOHAMA RUBBER CO., LTD., THE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/56—Compression moulding under special conditions, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0227—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using pressure vessels, e.g. autoclaves, vulcanising pans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D24/00—Producing articles with hollow walls
    • B29D24/002—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled
    • B29D24/005—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled the structure having joined ribs, e.g. honeycomb
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/608—Honeycomb structures

Definitions

  • This invention relates to apparatus for producing honeycomb panels, and more particularly, to apparatus which enables continuous production of honeycomb panels and thereby improves productivity.
  • the honeycomb panel is a panel material which consists of a honeycomb core C formed of light metal foil or paper, sandwiched between two thin plates B of steel, light metal or plastics bonded together.
  • the honeycomb panel used as a structural material is known for its light weight and very high resistance against bending.
  • Such honeycomb panels have been manufactured, as shown in FIG. 7A, by placing on a table 71 a work W consisting of a honeycomb core C sandwitched between two thin plates B, B with thermosetting bonding agent applied therebetween; surrounding the work W with a plurality of frame members 74 and wrapping the entire assembly in a vacuum bag 72; putting the wrapped assembly in an autoclave 75, as shown in FIG.
  • This method processes the honeycomb panels by a batch system, in which the autoclave is stopped to be heated every batch to replace processed works with new unprocessed ones. Therefore, at a time of starting next batch, it takes a fairly long time for the autoclave to raise a temperature to a necessary level for processing the works. This time loss lowers significantly the productivity and raise costs for production. Also, since the autoclave is very expensive, costs for an equipment are high.
  • An object of this invention is to provide apparatus for producing honeycomb panels which allows continuous processing of the honeycomb panels instead of the conventional batch processing.
  • Another object of this invention is to provide apparatus for producing honeycomb panels which improves productivity by employing a continuous processing.
  • a further object of this invention is to provide apparatus for producing honeycomb panels which needs not an expensive equipment such as an autoclave to reduce costs for building and running the equipment.
  • an apparatus which comprises a heating chamber isolated by a wall from external air, and a plurality of drawout trays capable of being individually inserted into and withdrawn from the heating chamber through a plurality of openings formed in the wall.
  • Each of the drawout trays has a work accommodating chamber connected to a vacuum source, a top opening of which can be hermetically closed by a flexible sheet that can be opened and closed.
  • each drawout tray has block plates at the front and rear ends thereof for closing the opening in the wall at every terminal positions when the drawout tray is inserted into and withdrawn from the heating chamber.
  • a plurality of drawout trays can independently be inserted into and withdrawn from the heating chamber while the heating chamber keeps to be substantially isolated from external air.
  • FIG. 1 is a perspective view of an apparatus for producing honeycomb panels as one embodiment of this invention, with a part of the outer wall removed;
  • FIG. 2 is an schematic view of the apparatus for producing honeycomb panels of FIG. 1;
  • FIG. 3 is a perspective view of a drawout tray installed in the apparatus for producing honeycomb panels of FIG. 1;
  • FIG. 4 is a plan view of the drawout tray of FIG. 3;
  • FIG. 5 is a cross-sectional view taken along the line V--V of FIG. 4;
  • FIG. 6 is a perspective view of a honeycomb panel shown in a condition of a honeycomb core and two thin plates separated one another;
  • FIG. 7A is an explanatory view showing an example of a conventional apparatus for producing honeycomb panels.
  • FIG. 7B is an explanatory view showing the conventional apparatus of FIG. 7A inserted in an autoclave.
  • reference numeral 1 represents a frame formed like a box, in which a partition plate 2 is installed to form a heating chamber 3 and a circulation passage 4, the former being arranged beneath the latter.
  • a heater 5 and a circulation fan 6 are provided in the circulation passage 4.
  • the fan 6 forcibly circulates the air heated by the heater 5 through the circulation passage 4 into the heating chamber 3.
  • a Silocco fan is used as the circulation fan 6 to feed a large volume of heated air through a plurality of distribution plates 7 to form laminar flows entering uniformly into the heating chamber 3.
  • Filters 8, 9 are provided at the inlet and outlet of the heating chamber 3 to remove dust in the heated air.
  • the heating chamber 3 is heated by blowing the hot air heated by the heater 5 provided outside the heating chamber 3 through the circulation passage 4 into the heating chamber 3.
  • the heating chamber 3 may be heated by other systems.
  • the heater instead of providing the heater or circulation passage outside the heating chamber, the heater may be installed inside the heating chamber to heat directly the air inside. In this direct heating system, it is desirable to provide an agitator inside the heating chamber to agitate or circulate the air.
  • a plurality of drawout trays 10 are provided to be spaced from one another and arranged so as to cross a direction of the hot air flow.
  • Each of the drawout trays 10 has grips 10a, by which it can be taken out of and into the heating chamber 3.
  • the plurality of drawout trays 10 are preferably arranged in multiple rows and tiers for effective utilization of the space and for better handling. In this embodiment a total of 18 trays are arranged in two rows and in nine tiers.
  • the drawout trays 10 can individually be inserted into and withdrawn from the heating chamber 3 by passing their bodies through openings 12 formed in a wall 11 separating the heating chamber 3 from the external air.
  • FIGS. 3, 4 and 5 show details of one of the drawout trays 10.
  • the drawout tray 10 has a work accommodating chamber 13 in its body portion which is formed by a bottom plate 14 and hollow frame members 15 secured to the four sides of the bottom plate 14.
  • the work accommodating chamber 13 can be hermetically closed on its top opening by a flexible sheet 16 which can be opened and closed, one side of which is secured to the frame member 15 on the rear side.
  • the flexible sheet 16 is preferably formed of a heat resistant plastic material as which, in this embodiment, a silicone rubber is used.
  • Each of the frame members 15 surrounding the work accommodating chamber 13 forms an exhaust passage 17 therein.
  • a large number of exhaust holes 18 are formed in the inner wall of the frame member 15 and communicate with the exhaust passage 17.
  • the exhaust passage 17 of the frame member 15 on the rear side communicates with a vacuum equipment not shown through a valve 19.
  • a vacuum equipment not shown through a valve 19.
  • the drawout tray 10 has block plates 22, 23 secured to the front and rear ends, respectively, which are like a flange to extend vertically beyond the top and bottom of the work accommodating chamber 13.
  • the block plate 22 at the front end also extends widthwise from both sides of the work accommodating chamber 13, like a flange.
  • the front block plate 22 closes the opening 12 in the wall 11 when the drawout tray 10 is inserted into the heating chamber 3 to the most inner position.
  • the rear block plate 23 closes the opening 12 in the wall 11 when the tray 10 is withdrawn from the heating chamber 3 to the most outer position.
  • the drawout tray 10 has a pair of rollers 20, 20 on each of both sides which are engaged with guide rails 21 secured to a frame of the heating chamber 3. Hence, the drawout tray 10 can be moved to and fro along the guide rails 21.
  • the rollers 20 are attached to the tray 10 and the guide rails 21 are mounted on the frame, it may reverse the arrangement so that the rollers 20 are attached to the frame and the guide rails 21 are mounted on the tray 10.
  • a work W contained in the work accommodating chamber 13 of the drawout tray 10 for heat treatment consists, as shown in FIG. 6, of a honeycomb core C and two thin plates B, B made of steel, light metal or plastics which sandwich the honeycomb core C therebetween to be bonded together with thermosetting adhesive such as epoxy resin or the like.
  • the thermosetting adhesive may be used in a paste-like state to be applied to both surfaces of the honeycomb core C or may be used in a half-solidified sheet-like state to be interposed between the honeycomb core C and the thin plates B.
  • the drawout tray 10 When placing such a work W in the work accommodating chamber 13, the drawout tray 10 is withdrawn from the heating chamber 3. Then, to harden the thermosetting adhesive on the work W, the tray 10 is inserted into the heating chamber 3 and the work accommodating chamber 13 containing the work W is evacuated to form a vacuum. As shown in FIGS. 4 and 5, when the work accommodating chamber 13 is evacuated, the flexible sheet 16 acts to apply a pressing force by atmospheric pressure to the work W to clamp the thin plates B and the honeycomb core C tightly together. In this condition the work W is heated to harden the thermosetting adhesive, thus forming a honeycomb panel with the thin plates B and the honeycomb core C securely bonded together.
  • the apparatus for honeycomb panels allows the drawout trays to be individually operated to be inserted into or withdrawn from the heating chamber. Further at the inserting and withdrawing operation of the drawout tray, the block plates provided at the front and rear ends of the tray virtually isolates the heating chamber from the external air, so that a heating operation of the heating chamber need not be stopped during the inserting and withdrawing operation of the tray. That is say, while the heating operation continues without stopping the heater and the circulation fan, it is possible to withdraw the drawout tray out of the heating chamber, replace the heat-hardened work in it with an unprocessed work, and insert it again into the heating chamber. In this way, the apparatus of this invention permits a continuous processing of honeycomb panels while keeping the heating equipment in operation, thereby enhancing productivity. Also, the apparatus of this invention allows not to use an expensive autoclave.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)
  • Furnace Charging Or Discharging (AREA)
US07/343,642 1988-05-06 1989-04-27 Apparatus for producing honeycomb panels Expired - Lifetime US4927358A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63108949A JPH07354B2 (ja) 1988-05-06 1988-05-06 ハニカムパネルの製造方法及びその装置
JP63-108949 1988-05-06

Publications (1)

Publication Number Publication Date
US4927358A true US4927358A (en) 1990-05-22

Family

ID=14497731

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/343,642 Expired - Lifetime US4927358A (en) 1988-05-06 1989-04-27 Apparatus for producing honeycomb panels

Country Status (4)

Country Link
US (1) US4927358A (ja)
EP (1) EP0345932B1 (ja)
JP (1) JPH07354B2 (ja)
DE (1) DE68914333T2 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5772429A (en) * 1995-12-18 1998-06-30 Fehrenbach; Michael James Portable oven for heating of tiles
US5937845A (en) * 1996-09-23 1999-08-17 Gladd, Sr.; Andrew J. Alternating horizontal air flow oven
US6405794B1 (en) * 1999-03-07 2002-06-18 Korea Institute Of Science And Technology Acoustic convection apparatus
US6739104B2 (en) * 2001-05-18 2004-05-25 Jamco Corporation Vacuum heat-insulating block
US20110256494A1 (en) * 2010-04-16 2011-10-20 Lydia Hannelore Braun Wax Melting Device
US20150323257A1 (en) * 2014-05-09 2015-11-12 Chroma Ate Inc. Heating furnace

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3285035B1 (de) * 2016-08-18 2021-03-10 Airtec Thermoprocess GmbH Temperierofen
EP3701902B1 (en) * 2017-10-26 2024-01-17 Universidade do Minho Ceramic structure for dental application and process for obtaining
CN109855399B (zh) * 2019-03-08 2020-09-08 浙江机电职业技术学院 一种具有保温功能的烘干机
CN113090932B (zh) * 2021-04-08 2022-09-16 南京航空航天大学 一种正多边形蜂窝夹层构件及其制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050254A (en) * 1934-02-14 1936-08-11 Westinghouse Electric & Mfg Co Humidity regulated drier
US3738890A (en) * 1971-04-08 1973-06-12 Seal Method of bonding a laminating film to a graphic art object
US4201903A (en) * 1973-08-30 1980-05-06 Becker Otto A Method and apparatus for manufacturing a load bearing structural element having special internal atmospheric conditions
US4312829A (en) * 1979-12-10 1982-01-26 Fourcher Fredric J Molding method
US4322204A (en) * 1979-11-13 1982-03-30 Rene Voegtlin Hot air recirculation baking oven
US4596624A (en) * 1984-05-02 1986-06-24 Cirtel, Inc. Apparatus for laminating multilayered printed circuit boards
US4689105A (en) * 1985-04-15 1987-08-25 Advanced Plasma Systems Inc. Multi-layer printed circuit board lamination apparatus
US4816106A (en) * 1984-12-13 1989-03-28 Aeritalia Saipa - Gruppo Velivoli Da Trasporto Method for the controlled curing of composites

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385628A (en) * 1944-08-25 1945-09-25 Crosse Rubber Mills Company Footwear vulcanizer
DE1132321B (de) * 1960-03-25 1962-06-28 Phoenix Gummiwerke Ag Vorrichtung zum Herstellen von Luftstutzen aus Kautschuk fuer aufblasbare Camping-Artikel
DK144429C (da) * 1979-12-12 1982-08-23 Superfos Glasuld As Fremgangsmaade ved fremstilling af et byggeelement
JPS5870987A (ja) * 1981-10-22 1983-04-27 Kobe Steel Ltd ハニカムサンドイツチ構造板の製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050254A (en) * 1934-02-14 1936-08-11 Westinghouse Electric & Mfg Co Humidity regulated drier
US3738890A (en) * 1971-04-08 1973-06-12 Seal Method of bonding a laminating film to a graphic art object
US4201903A (en) * 1973-08-30 1980-05-06 Becker Otto A Method and apparatus for manufacturing a load bearing structural element having special internal atmospheric conditions
US4322204A (en) * 1979-11-13 1982-03-30 Rene Voegtlin Hot air recirculation baking oven
US4312829A (en) * 1979-12-10 1982-01-26 Fourcher Fredric J Molding method
US4596624A (en) * 1984-05-02 1986-06-24 Cirtel, Inc. Apparatus for laminating multilayered printed circuit boards
US4816106A (en) * 1984-12-13 1989-03-28 Aeritalia Saipa - Gruppo Velivoli Da Trasporto Method for the controlled curing of composites
US4689105A (en) * 1985-04-15 1987-08-25 Advanced Plasma Systems Inc. Multi-layer printed circuit board lamination apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5772429A (en) * 1995-12-18 1998-06-30 Fehrenbach; Michael James Portable oven for heating of tiles
US5937845A (en) * 1996-09-23 1999-08-17 Gladd, Sr.; Andrew J. Alternating horizontal air flow oven
US6263693B1 (en) 1996-09-23 2001-07-24 Andrew J. Gladd, Sr. Alternating horizontal air flow chiller
US6405794B1 (en) * 1999-03-07 2002-06-18 Korea Institute Of Science And Technology Acoustic convection apparatus
USRE40512E1 (en) * 1999-06-23 2008-09-23 Samsung Electronics Co., Ltd. Acoustic convection apparatus
US6739104B2 (en) * 2001-05-18 2004-05-25 Jamco Corporation Vacuum heat-insulating block
US20110256494A1 (en) * 2010-04-16 2011-10-20 Lydia Hannelore Braun Wax Melting Device
US20150323257A1 (en) * 2014-05-09 2015-11-12 Chroma Ate Inc. Heating furnace
US9568245B2 (en) * 2014-05-09 2017-02-14 Chroma Ate Inc. Heating furnace

Also Published As

Publication number Publication date
DE68914333D1 (de) 1994-05-11
JPH07354B2 (ja) 1995-01-11
JPH01280537A (ja) 1989-11-10
DE68914333T2 (de) 1994-08-04
EP0345932A3 (en) 1991-07-31
EP0345932A2 (en) 1989-12-13
EP0345932B1 (en) 1994-04-06

Similar Documents

Publication Publication Date Title
US4927358A (en) Apparatus for producing honeycomb panels
US20090007524A1 (en) Device for Producing Deep Packaging Trays Comprising a Cooled Lower Mould Section
AU612610B2 (en) Method and apparatus for vacuum packaging
GB1380829A (en) Vacuum press and method of bonding
US3091845A (en) Method for making honeycomb panel
US1909444A (en) Method and means for making laminated glass
US3302303A (en) Drying system
US3347723A (en) Laminating process and apparatus
US11975387B2 (en) Press sintering process product carrier, press sintering apparatus and press sintering process
US6289604B1 (en) Environmental protection compliant, higher productivity footwear vacuum dryer and conveyance apparatus
US3826017A (en) Heating system
US6072158A (en) Method and apparatus for heating thin plastic sheet with air diffuser plate preventing sagging of the sheet
US20200269486A1 (en) Apparatus for making dental appliances
US3107396A (en) Vacuum sign producing apparatus
EP0331648A2 (en) Process for manufacturing laminated glass
GB334768A (en) Method of and apparatus for making laminated glass
US5648140A (en) Conveyor and method for continuous vacuum lamination
US1844098A (en) Apparatus for making composite glass
JPH0195045A (ja) 多層プリント配線板の製造方法
EP0046972A3 (en) Panel for heating and or cooling
US5507157A (en) Cold storage
US2810668A (en) Apparatus for laminating glass sheets
JP3547356B2 (ja) 食物処理設備
JP2966193B2 (ja) ホットプレス装置
JPH0611139Y2 (ja) マットの裏貼加硫装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: YOKOHAMA RUBBER CO., LTD., THE, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:TAMURA, MITSUNOBU;TSUCHIHASHI, TOSHIFUMI;KENMOCHI, TOSHIHISA;REEL/FRAME:005069/0181

Effective date: 19890417

Owner name: HONDA GIKEN KOGYO KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:TAMURA, MITSUNOBU;TSUCHIHASHI, TOSHIFUMI;KENMOCHI, TOSHIHISA;REEL/FRAME:005069/0181

Effective date: 19890417

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

AS Assignment

Owner name: HONDA GIKEN KOGYO KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YOKOHAMA RUBBER CO., LTD., THE;REEL/FRAME:010395/0377

Effective date: 19991115

FPAY Fee payment

Year of fee payment: 12